Angular ng-class if else

Question

I'd like to know how to do to make the False ng-class.

page.isSelected(1) is TRUE if the page if the page is selected, else FALSE

<div id="homePage" ng-class="{ center: page.isSelected(1) }">

I therefore want you if:

isSelected is TRUE: center

isSelected is FALSE: left

I tried:

<div id="homePage" ng-class="{ page.isSelected(1) 'center : 'left' }">

but it doesnt work.

I do not know what I'm doing wrong. Can you help me please?

Answer 1

Just make a rule for each case:

<div id="homePage" ng-class="{ 'center': page.isSelected(1) , 'left': !page.isSelected(1)  }">

Or use the ternary operator:

<div id="homePage" ng-class="page.isSelected(1) ? 'center' : 'left'">